Fusion Equation of Metals
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG1989年第2期
论文作者：洪永炎
文章页码：119 - 122
摘 要：<正> An expression of initial slope of meltingcurve of pure metals was obtained as follows:（dTm/dP）o=Tmo/c, where c=1.09 (Nat)5/3z-1/3,the unit of c is GPa, Nat is the atomic concentra-tion (in 1028 m-3), z is the valence, Tmois the melting temperature （in k） of metal underone atmosphere. The calculated results forthirty-one metals agree well with experiments.It has also been proved that by using the freeelectron model of melting, the fusion equationof metals is Simon equation (Tm/Tmo)q=1+（p/d）.Two parameters q and d, which have to fit withexperiments in Simon’s empirical equation, nowcan be predicted theoretically, e.g. for Mg,giving q=1.56, d=7.88GPa, the calculated meltingcurve in a fairly wide pressure range （0～60GPa）is shown to be close to the experimental one.
洪永炎
摘 要：<正> An expression of initial slope of meltingcurve of pure metals was obtained as follows:（dTm/dP）o=Tmo/c, where c=1.09 (Nat)5/3z-1/3,the unit of c is GPa, Nat is the atomic concentra-tion (in 1028 m-3), z is the valence, Tmois the melting temperature （in k） of metal underone atmosphere. The calculated results forthirty-one metals agree well with experiments.It has also been proved that by using the freeelectron model of melting, the fusion equationof metals is Simon equation (Tm/Tmo)q=1+（p/d）.Two parameters q and d, which have to fit withexperiments in Simon’s empirical equation, nowcan be predicted theoretically, e.g. for Mg,giving q=1.56, d=7.88GPa, the calculated meltingcurve in a fairly wide pressure range （0～60GPa）is shown to be close to the experimental one.
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